Marimuthu S is a Professor and Head at Karpagam Academy of Higher Education at Karpagam Academy of Higher Education. They is proficient in English and Tamil. Colleagues describe them as "I'm extremely fortunate to work along with Dr. S. Marimuthu. Put it short he is teacher's teacher. Thank you sir." and "We were working together to earn our PhDs under the research supervisor Dr S G Ponnmbalam. We had together worked with a particular optimisation modelling and published an article in an IEEE Conference. I still remember his hardwork and result oriented approach and seen him totally committement towards the work."